VAWT design spec

[jinncraft]

Hi

Is there a VAWT with the following parameters

1. output power 50 KW
2. system width 2 m
3. operational wind speed 35 m/s
4 cut in speed 2 m/s
5 cut out speed 80m/s
6 system height 5m

does any company have a VAWT that works in this range or can it design one

Thanks

[neez]

Hi :smile:

Is there a VAWT with the following parameters

1. output power 50 KW
2. system width 2 m
3. operational wind speed 35 m/s
4 cut in speed 2 m/s
5 cut out speed 80m/s
6 system height 5m

does any company have a VAWT that works in this range or can it design one

Thanks :smile:

If using the formula to calculate power out of VAWT is:

P(Watts)= 1/2 x Roh x Area x (Velocity)^3 x Cp X Ng x Nf

Assume
Roh= 1.25
Cp= 0.45 (for good design-max ~0.59)
Ng (efficiency)= 0.8
Nf (Cooficient of friction)= .6

Plugging the values given in the formula gives:

P(W)= 0.5 x 1.25 x (5 x 2) x (35)^3 x 0.45 x 0.8 x0.6
P(W)= 57,880 Watts

Considering this prototype of the helical twisted VAWT (http://renewable-solar-energy.blogspot.com/2010/04/lebanons-vertical-axis-wind-turbine.html) with funnels it is possible to reduce the size with lower wind speed. It is also possible to use indirect drive and increase the power since the helical twisted VAWT produces larger torque than HAWT.